CN107117530B - A heavy-duty lifting device - Google Patents

Abstract

The invention discloses a heavy-duty hoisting device, comprising a base frame, a first pulling plate, a second pulling plate, and a first curved arm, an intermediate beam, a first connecting rod, a first bending arm, a middle beam, a first connecting rod and a second connecting rod which are movably connected in sequence and form a parallel four-bar linkage mechanism. a thimble plate support and the second curved arm, the middle beam, the second connecting rod, and the second thimble plate support that constitute another parallel four-bar linkage mechanism; the lower end of the base frame is connected with a main shaft, and the first pull plate One end and one end of the second pulling plate are respectively movably connected with the main shaft, a hydraulic cylinder is fixed on the first pulling plate shaft, and the hydraulic cylinder is connected with the second pulling plate shaft through a piston; A first ejector plate is installed on the ejector plate support, a second ejector plate is installed on the second ejector plate support, and the first ejector plate is arranged opposite to the second ejector plate. The heavy-load hoisting device provided by the invention utilizes its own hydraulic opening and closing to cooperate with the rotation of the overhead coupler to accurately find the hoisting position of the workpiece, and realizes the technological requirements of smooth hoisting, turning over, and material erection.

Description

A heavy-duty lifting device

technical field

The invention relates to the field of mechanical hoisting equipment, in particular to a heavy-load hoisting device.

Background technique

At present, three pieces of equipment are needed to complete the holding, standing, vertical hoisting and turning over of the overweight casting and forging in China. The investment is more than three times that of a single multi-function spreader, and the process is complicated. When the traditional tooling equipment is working, due to structural reasons, it is actually a single-point hoisting, and the left and right forces of the lifting middle beam are uneven. Therefore, in use, the middle beam is often inclined, which increases the hoisting force, and in the next use, it is necessary to Adjustments that affect synchronicity.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a heavy-duty hoisting device to solve the above-mentioned problems in the prior art, use its own hydraulic opening and closing to cooperate with the rotation of the overhead coupler, accurately find the lifting position of the workpiece, and realize the process requirements such as smooth hoisting, turning over, and material erection. .

For achieving the above object, the present invention provides the following technical solutions:

The invention provides a heavy-duty hoisting device, comprising a base frame, a first pulling plate, a second pulling plate, and a first curved arm, an intermediate beam, a first connecting rod, a first curved arm, a middle beam, a first connecting rod and a second connecting rod which are movably connected in sequence and form a parallel four-bar linkage mechanism. a thimble plate support and a second curved arm, a middle beam, a second connecting rod, and a second thimble plate support that are movably connected in sequence and form another parallel four-bar linkage mechanism; the lower end of the base frame is connected with a main shaft, and the One end of the first pull plate and one end of the second pull plate are respectively movably connected to the main shaft, the other end of the first pull plate and one end of the second curved arm are movably connected through the first pull plate shaft, the second pull plate The other end of the pull plate is movably connected with the first curved arm through a second pull plate shaft; a hydraulic cylinder is fixed on the first pull plate shaft, and the hydraulic cylinder is connected with the second pull plate shaft through a piston.

Optionally, the first curved arm and the upper end of the first thimble plate support are connected by the first thimble plate support shaft, and the lower end of the first thimble plate support and one end of the first connecting rod pass through the first thimble plate support shaft. The connecting rod shaft is connected, the other end of the first connecting rod is connected with the lower end of the intermediate beam through the first intermediate beam shaft, and the upper end of the intermediate beam is connected with the middle of the first bending arm through the first bending arm shaft; the The second curved arm is connected with the upper end of the second thimble plate support through the second thimble plate support shaft, and the lower end of the second thimble plate support is connected with one end of the second connecting rod through the second connecting rod shaft, so The other end of the second connecting rod is connected with the lower end of the intermediate beam through a second intermediate beam shaft, and the upper end of the intermediate beam is connected with the middle of the second bending arm through a second bending arm shaft.

Optionally, a first thimble plate is installed on the first thimble plate support, a second thimble plate is installed on the second thimble plate support, and the first thimble plate is opposite to the second thimble plate set up.

Optionally, an ejector plate rotation shaft is installed in the first ejector plate support, and the ejector plate rotation shaft is located between the first ejector plate support shaft and the first connecting rod shaft; A thimble plate is fixedly connected with the rotating shaft of the thimble plate by bolts; the first thimble plate support is provided with a horizontal limiting device and a circumferential rotation limiting device of the rotating shaft of the thimble plate; the second thimble plate The inner structure of the support is the same as that of the first ejector plate support.

Optionally, the end of the thimble plate rotating shaft away from the first thimble plate is a circumferential toothed structure, the circumferential rotation limiting device is located above the toothed structure, and the circumferential rotation limiting device includes a mounting plate. A rotation-limiting drive shaft on the first thimble plate support, a rotation-limiting sliding block is installed at the lower end of the rotation-limiting driving shaft, and the rotation-limiting driving shaft can drive the rotation-limiting sliding block to move up and down.

Optionally, the horizontal limit device is a limit plate sleeved on the front end of the rotation shaft of the thimble plate, a second bolt is installed on the edge of the limit plate, and the second bolt is connected to the first thimble. Board support connection.

Optionally, the inner diameter of both ends of the shaft hole on which the thimble plate rotating shaft is installed in the first thimble plate support is larger than the inner diameter of the middle, and the inner diameter of the shaft hole is stepped, and the thimble plate rotating shaft is close to the first thimble plate. The diameter of the end is larger than the diameter of the end of the ejector plate rotating shaft away from the first ejector plate.

Optionally, a dust-proof device is installed on the rotating shaft of the thimble plate.

Optionally, the first thimble plate and the second thimble plate are circular structures.

Optionally, a hydraulic station is provided on the base frame, and the hydraulic station provides oil pressure to drive the hydraulic cylinder to operate and push the piston to expand or contract.

Compared with the prior art, the heavy-load lifting device provided by the present invention has the following technical effects:

The heavy-load hoisting device provided by the invention has a wide range of applications, and the surface of the hoisted workpiece can be flat, curved or other special-shaped surfaces; and the maximum indentation on the clamping surface does not exceed 30 cm, which greatly improves the material utilization rate and reduces the scrap rate. Under the strict restrictions of height, width and own weight, the safety factor is above 3, and the weight of lifting workpiece can reach 550T, which can solve the related process requirements in the casting and forging process of heavy-duty raw materials such as large-scale nuclear power, wind power, and hydropower. Using a single hook for lifting, its own hydraulic opening and closing and the rotation of the crane hook can accurately find the lifting position of the workpiece, and realize the process requirements of smooth lifting, turning over, and material erection. The three shafts in the thimble plate support are arranged on three different surfaces, so that the thimble support has ample space for setting a horizontal limit mechanism, a circumferential rotation limit mechanism and a dustproof structure. Combined with the circular thimble plate, the stop and rotation of the thimble plate can be controlled at any position.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiment, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor;

Fig. 1 is a three-dimensional schematic diagram of a heavy-duty hoisting device of the present invention;

Fig. 2 is the structural principle diagram of the heavy-duty hoisting device of the present invention;

3 is a sectional view of the structural principle of the heavy-duty hoisting device of the present invention;

Figure 4 is a side view of the structural principle of the heavy-duty lifting device of the present invention;

FIG. 5 is a side view of the position-limiting and rotation-limiting structure of the heavy-duty hoisting device of the present invention;

FIG. 6 is a sectional view of the position-limiting and rotation-limiting structure of the heavy-duty hoisting device of the present invention;

Figure 7 is a structural diagram of a thimble plate of a heavy-duty hoisting device of the present invention;

Description of reference numerals: 1 is the base frame, 2 is the hydraulic station, 3 is the main shaft, 401 is the first pull plate, 402 is the second pull plate, 501 is the first pull plate shaft, 502 is the second pull plate shaft, 601 is the first bending arm shaft, 602 is the second bending arm shaft, 701 is the middle beam, 801 is the first middle beam shaft, 802 is the second middle beam shaft, 901 is the first bending arm, 902 is the second bending arm, 1001 is the first connecting rod, 1002 is the second connecting rod, 1101 is the first ejector plate support shaft, 1102 is the second ejector plate support shaft, 1201 is the first ejector plate support, 1202 is the second ejector plate support Seat, 1301 is the first connecting rod shaft, 1302 is the second connecting rod shaft, 1401 is the first thimble plate, 1402 is the second thimble plate, 1501 is the hydraulic cylinder, 1502 is the piston, 16 is the rotation-limiting drive shaft, 17 is the Rotation-limiting sliding block, 18 is the thimble plate rotating shaft, 19 is the limit plate, 20 is the bolt, and 21 is the crane hook.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a heavy-duty hoisting device to solve the above-mentioned problems in the prior art, use its own hydraulic opening and closing to cooperate with the rotation of the overhead coupler, accurately find the lifting position of the workpiece, and realize the process requirements such as smooth hoisting, turning over, and material erection. .

For achieving the above object, the present invention provides the following technical solutions:

The invention provides a heavy-duty hoisting device, comprising a base frame, a first pulling plate, a second pulling plate, and a first curved arm, an intermediate beam, a first connecting rod, a first curved arm, a middle beam, a first connecting rod and a second connecting rod which are movably connected in sequence and form a parallel four-bar linkage mechanism. a thimble plate support and a second curved arm, a middle beam, a second connecting rod, and a second thimble plate support that are movably connected in sequence and form another parallel four-bar linkage mechanism; the lower end of the base frame is connected with a main shaft, and the One end of the first pull plate and one end of the second pull plate are respectively movably connected to the main shaft, the other end of the first pull plate and one end of the second curved arm are movably connected through the first pull plate shaft, the second pull plate The other end of the pull plate is movably connected with the first curved arm through a second pull plate shaft; a hydraulic cylinder is fixed on the first pull plate shaft, and the hydraulic cylinder is connected with the second pull plate shaft through a piston.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1-7, the present invention provides a heavy-duty hoisting device, which includes a base frame 1, a first pull plate 401, a second pull plate 402, and a first bend that is movably connected in sequence and constitutes a parallel four-bar linkage mechanism The arm 901, the middle beam 701, the first link 1001, the first thimble plate support 1201, and the second curved arm 902, the middle beam 701, the second link 1002, The second thimble plate support 1202; the lower end of the base frame 1 is connected with the main shaft 3, and one end of the first pulling plate 401 and one end of the second pulling plate 402 are respectively movably connected to the main shaft 3, and the first pulling plate 402 is movably connected to the main shaft 3. The other end of the plate 401 is movably connected to one end of the second curved arm 902 through the first pull plate shaft 501, and the other end of the second pull plate 402 is movably connected to the first curved arm 901 through the second pull plate shaft 502; A hydraulic cylinder 1501 is fixed on the first pull plate shaft 501, and the hydraulic cylinder 1501 is connected with the second pull plate shaft 502 through a piston 1502; a hydraulic station 2 is arranged on the base frame 1, and the hydraulic station 2. Provide oil pressure to drive the hydraulic cylinder 1501 to operate, thereby pushing the piston 1502 to expand or contract. The first curved arm 901 is connected with the upper end of the first thimble plate support 1201 through the first thimble plate support shaft 1101, and the lower end of the first thimble plate support 1201 and one end of the first connecting rod 1001 pass through the first thimble plate support shaft 1101. A connecting rod shaft 1301 is connected, the other end of the first connecting rod 1001 is connected with the lower end of the intermediate beam 701 through the first intermediate beam shaft 801 , and the upper end of the intermediate beam 701 and the first curved arm 901 are connected through a first intermediate beam 901 . The curved arm shaft 601 is connected; the second curved arm 902 is connected to the upper end of the second thimble plate support 1202 through the second thimble plate support shaft 1102, and the lower end of the second thimble plate support 1202 is connected to the second One end of the connecting rod 1002 is connected by a second connecting rod shaft, the other end of the second connecting rod 1002 is connected with the lower end of the intermediate beam 701 through the second intermediate beam shaft 802 , and the intermediate beam 701 is connected with the second bending arm 902 The middle is connected by a second curved arm shaft 602; a circular first thimble plate 1401 is installed on the first thimble plate support 1201, and a circular second thimble plate is installed on the second thimble plate support 1202 1402, the first thimble plate 1401 and the second thimble plate 1402 are disposed opposite to each other.

Further preferably, an ejector plate rotation shaft 18 is installed in the first ejector plate support 1201, and the ejector plate rotation shaft 18 is located between the first ejector plate support shaft 1101 and the first connecting rod shaft 1301. the first thimble plate 1401 and the thimble plate rotating shaft 18 are fixedly connected by bolts 20; the first thimble plate support 1201 is provided with a horizontal limiting device and a circumferential direction of the thimble plate rotating shaft 18 Rotation limiting device; the internal structure of the second ejector plate support 1202 is the same as that of the first ejector plate support 1201 .

The end of the thimble plate rotating shaft 18 away from the first thimble plate is a circumferential toothed structure, the circumferential rotation limiting device is located above the toothed structure, and the circumferential rotation limiting device includes a The rotation-limiting drive shaft 16 on the first thimble plate support 1201, the rotation-limiting sliding block 17 is installed at the lower end of the rotation-limiting driving shaft 16, and the rotation-limiting driving shaft 16 can drive the rotation-limiting sliding block 17 to move up and down, so The horizontal limit device is a limit plate 19 sleeved on the front end of the thimble plate rotating shaft 18, a second bolt is installed on the edge of the limit plate 19, and the second bolt is supported by the first thimble plate. The inner diameter of both ends of the shaft hole where the thimble plate rotating shaft 18 is installed in the first thimble plate support 1201 is larger than the inner diameter of the middle, and the inner diameter of the shaft hole is stepped, and the thimble plate rotating shaft 18 is close to the second The diameter of an end of the thimble plate 1401 is larger than the diameter of the end of the thimble plate rotating shaft 18 away from the first thimble plate 1401 , and a dustproof device is installed on the thimble plate rotating shaft 18 .

The invention changes the opening and closing of the electric winch into the opening and closing of the hydraulic cylinder; the position of the parallel four-link structure is adjusted, so that the three shafts in the original thimble seat are arranged from the same horizontal plane to three different planes, and there is sufficient Circumferential rotation limit device, horizontal limit device and dust-proof device are set in the space of the machine. Combined with the circular thimble plate, the stop and rotation of the thimble plate can be controlled at any position. Process requirements such as vertical hanging and turning over after the material is erected.

The heavy-duty hoisting device of the present invention relies on the hydraulic station 2 to provide oil pressure to drive the hydraulic cylinder 1501 to push the piston 1502 to expand or contract to complete the opening and closing of the curved arm during hoisting. The whole hoisting tool is kept in a vertical state, which can ensure accurate positioning and simple operation during hoisting; The first pull plate shaft 501 and the second pull plate shaft 502 are connected with the first curved arm 901 and the second curved arm 902 below. The first curved arm 901 and the second curved arm 902 are fixed by the middle beam 701 to form a scissors-type clamp structure, and the first curved arm shaft 601 and the second curved arm shaft 602 can be used as a pivot point for rotation. When the first curved arm 901 and the second curved arm rotate around the first curved arm axis 601 and the second curved arm axis 602, under the action of the parallelogram structure, the first thimble plate support 1201 and the second thimble plate support 1202 The relative movement can ensure that the inner vertical end surfaces of the first thimble plate 1401 and the second thimble plate 1402 are always kept parallel.

In terms of position limit and rotation limit, the first thimble plate 1401 and the second thimble plate 1402 are connected to the rotating shaft 18 of the thimble plate through fixing bolts 20, and they are detachable and connected for the convenience of maintenance, and to reduce the difficulty of processing and reduce the weight. disassembly. The two thimble plate rotating shafts 18 are respectively assembled in the shaft holes of the first thimble plate support 1201 and the second thimble plate support 1202, and the horizontal direction is limited by the steps of the thimble plate support and the limit plate 19; the thimble plate rotating shaft 18 is provided with a circumferential rotation limiting device. This structure adopts a circumferential rotation limiting device similar to a ratchet mechanism and a gear structure, that is, when the rotation limiting drive shaft 16 rotates, the rotation limiting slider 17 is driven to slide in or out of the ejector plate. The tooth structure at the rear end of the rotating shaft 18 is used to determine the rotating state of the rotating shaft 18 of the ejector plate.

In this specification, specific examples are used to illustrate the principles and implementations of the present invention, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; There will be changes in the specific implementation manner and application scope of the idea of the invention. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (2)

1. A heavy-duty hoisting device is characterized in that: it comprises a base frame, a first pull plate, a second pull plate, and the first curved arm, the middle beam, the first connecting the rod, the first thimble plate support and the second curved arm, the middle beam, the second connecting rod and the second thimble plate support which are movably connected in sequence and constitute another parallel four-bar linkage mechanism; the lower end of the base frame is connected with the main shaft One end of the first pull plate and one end of the second pull plate are respectively movably connected to the main shaft, and the other end of the first pull plate and one end of the second curved arm are movably connected through the first pull plate shaft, so The other end of the second pull plate is movably connected to the first curved arm through a second pull plate shaft; a hydraulic cylinder is fixed on the first pull plate shaft, and the hydraulic cylinder is connected to the second pull plate shaft through a piston connection; a first thimble plate is installed on the first thimble plate support, a second thimble plate is installed on the second thimble plate support, and the first thimble plate is arranged opposite to the second thimble plate, And the first thimble plate and the second thimble plate are both circular; the first curved arm and the upper end of the first thimble plate support are connected by the first thimble plate support shaft, the first thimble The lower end of the plate support is connected with one end of the first connecting rod through a first connecting rod shaft, the other end of the first connecting rod is connected with the lower end of the intermediate beam through a first intermediate beam shaft, and the upper end of the intermediate beam is connected with the The middle of the first curved arm is connected by the first curved arm shaft; the second curved arm is connected with the upper end of the second thimble plate support through the second thimble plate support shaft, and the lower end of the second thimble plate support is connected with the second thimble plate support. One end of the second connecting rod is connected by a second connecting rod shaft, the other end of the second connecting rod is connected with the lower end of the intermediate beam through the second intermediate beam shaft, and the upper end of the intermediate beam and the middle of the second bending arm pass through The second bending arm shaft is connected; an ejector plate rotation shaft is installed in the first ejector plate support, and the ejector plate rotation shaft is located between the first ejector plate support shaft and the first connecting rod shaft; The first thimble plate and the thimble plate rotating shaft are fixedly connected by bolts; the first thimble plate support is provided with a horizontal limiting device and a circumferential rotation limiting device of the thimble plate rotating shaft; The inner structure of the second thimble plate support is the same as that of the first thimble plate support; the end of the thimble plate rotating shaft away from the first thimble plate is a circumferential toothed structure, and the circumferential rotation limiting device is located in the Above the toothed structure, the circumferential rotation limiting device includes a rotation limiting drive shaft mounted on the first thimble plate support, a rotation limiting slider is installed at the lower end of the rotation limiting drive shaft, and the rotation limiting drive shaft can The rotation-limiting slider is driven to move up and down; the horizontal limit device is a limit plate sleeved on the front end of the rotating shaft of the thimble plate, a second bolt is installed on the edge of the limit plate, and the second bolt connected with the first thimble plate support; a dustproof device is installed on the thimble plate rotating shaft; the inner diameter of both ends of the shaft hole where the thimble plate rotating shaft is installed in the first thimble plate support is larger than the inner diameter of the middle, and The inner diameter of the shaft hole is stepped, and the diameter of the rotating shaft of the thimble plate close to the end of the first thimble plate is larger than the diameter of the end of the rotating shaft of the thimble plate away from the first thimble plate. 2 . The heavy-duty lifting device according to claim 1 , wherein a hydraulic station is provided on the base frame, and the hydraulic station provides oil pressure to drive the hydraulic cylinder to operate and push the piston to expand or contract. 3 .